| 摘要 |
A method is described herein for the preparation of a resin that may be used as a component in formulations of hydrosilation cured vinyl disiloxanes to increase the hydrophilicity and thereby reduce the contact angle. The resin is a vinyl functionalized alkoxy-siloxylated polyether or polyester copolymer and the method involves reacting a hydride functionalized siloxane in the presence of a Lewis acid catalyst with (a) one or more of an alcohol, a polyether diol, a polyether polyol, a polyester diol or polyester polyol and (b) a hydride functionalized siloxane containing a terminal vinyl group directly bonded to a silicon atom. This resin can be used in the formulation of dental impression materials.
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